Gasket



C B. BAILEY Oct. 1, 1929.

GASKET Original Filed May 20, 1925 mf a V2 5 i atented Oct. 1, 1929 TTECLAUDE IB. BAILEY, OF WYANDOT'IE, MICHIGAN, ASSIGNOR 'IO MGCORIDRADIATOR &

MEG. 00., OF DETROIT, MICHIGAN, A CORPORATION OF MAINE GASKET Originalapphcation filed May 20, 1925, Serial No. 31,483. Divided and thisapplication filed November 1925. Serial No. 66,169.

In my copending application Serial No. 31,483, tiled May 20,1925, and ofwhich the present application is a division, I have disclosed andclaimed a gasket having its body and pressure-receiving portions formedfrom a single piece of sheet metal, with the pres sure-receiving portionabout the port hole of the gasket and in folded form so as to be thickerthan the body portion and thus take the place of the asbestos cushionheretofore generally employed in conjunction with sheet metal gaskets,thereby simplifying the structure and reducing the cost of manufacturethereof.

The invention of the present application has for its object to bend themetal of the gasket body about the port hole into folded form withportions on opposite sides of the body to provide the pressure-receivingportion of the gasket.

The present invention further contemplates the provision of thesepressure-receiving portions about the respective port holes or opencingsin cylinder head gaskets, manifold gaskets. and others having aplurality of spaced holes or openings therein, so that these gaskets maybe made entirely from sheet metal and from a single layer thereof toreduce the cost of manufacture and produce eiiicient gaskets.

In the accompanying drawings- Fig. 1 is a plan view of a cylinder headgasket constructed in accordance with my invention;

Figs. 2 and 3 are sectional Views taken through the gasket on lines 2-2and 3-3, respectively, of Fig. 1; and

Fig. 1 is an enlarged vertical sectional view showing the manner inwhich the gasket is clamped in place when in use.

As shown in the drawings, the gasket has a flat body portion 1 stampedor otherwise formed from a single layer of sheet metal, such as copper,brass, aluminum, zinc, or other suitable material. Said gasket, when ofthe cylinder head type, has a plurality of relatively large port holesor openings 2, 2

cut or otherwise formed in its body 1' and disposed in a row lengthwisethereof, with said holes substantially the same in size and arranged tofit the cylinder bores 3, 3 in the engine block 4, as shown in Fig. 4.

As shown in Fig. 1, the body 1 is further provided with a plurality, ofsmaller port holes 5, 5, also the same in size and arranged to fit aboutthe registering water passages (not shown) in the engine block 4: andits head 6, respectively. When the gasket is clamped between such partsby the usual studs or bolts 7, 7, as in structures of this kind, thegasket has holes 8, 8 at its margins to receive these studs or bolts.

The gasket shown in the drawings is designed for use in four-cylinderinternal combustion engines with overhead valves, such as employed inChevrolet cars; it being of course understood, however, that the gasketsof my invention with the required port hole arrangement may be made forother motors with the same orv a greater number of cylinders withdifferent valve arrangements.

Around each of the port holes 2 and 5,

I provide a pressure-receiving portion 9. These portions are relativelynarrow and are I bent into folded form from the metal of the '15 gasketbody 1 about the respective port holes and project beyond the plane ofthe body so as to be thicker than the latter. The metal in making up thefolds is under slight tension and the folds are slightly spaced apart.so This makes the pressure-receiving portions yieldable to clampingpressures when exerted on the gasket to produce tight joints.

As shown in Figs. 2 and 3 and more in detail in Fig. 4, eachpressure-receiving portion 9 is folded to provide four thicknesses ofsheet metal about the port hole in conjunction with the body layer 1.The metal is so folded that there is a layer a on one side of the body 1and two layers Z), 0 on the opposite side of the body 1. The layer 1) isbetween the body 1 and the layer 0 and is joined to the body 1 and layer0, respectively, by the folds in the metal at the opposite edges of thelayer Z). The layersa and c are oined by the fold "in the metalextending through the port hole and closing the spaces between thelayers to the entry of fluids passing through the port hole.

lVith my improvements, the gasket is considerably reduced in thicknessas compared to the structures heretofore in use and, being entirely ofsheet metal, provides a metal to metal joint when clampedin place,Without I I it being necessary to pay any particular attention to themanner of tightening the gasket down between the head and block. Thegasket being entirely of sheetmetal and having all parts thereofintegral, blow-outs are prevented for the reason that there are noseparate parts in the gasket structure to loosen or fracture under highpressures as ith gaskets made. up of separate metal layers or facingsandjinterposed layers of asbestos, the latter being particularly'subjectto blow-outs by reason of concealeddefects therein. 7. .7

The gaskets embodying my invention may take various shapes and sizes andare capable of various uses. I

The details of structure shown and described herein may bevariouslychanged and modified without departing from the spirit andscope of my invention I claim as my invention:

A gasket having a flat body of a single layer of sheet metal with a porthole therein, and a relatively narrow pressure-receiving portionintegrally carried by the body about said port hole, said portion beingbent into folded form from the metal of the body about the port holeand; having three layers only substantially parallel to each other andto the body with one layer on one side of the body and the other two onthe opposite side of they body, all of said layers being integrallyconnected by the folds in the metal between them and with the foldconnecting the outer layers extending through said port hole.

In testimony whereof, I affix my signature this 28 day of Oct, 1925. i

. CLAUDE B BAILEY.

